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Which API Medication Do You Need? Melafix or Pimafix?

Melafix vs Pimafix
API makes two popular aquarium medications with very similar-sounding names, Melafix and Pimafix. Melafix and Pimafix are both herbal medications for aquarium fish. What’s the difference? Essentially, Melafix is an antibacterial medication while Pimafix is an antifungal medication. Here is a short guide to help you decide whether your fish needs an antifungal or antibacterial medication.
Fungal infection
For Fungal Infections Use Pimafix
Fungal infections typically appear as a white, cotton-like growth on a fish’s mouth, body, or fins. Fungal infections are common in freshwater fish, but are rarely seen in saltwater fish. Fungal infections are commonly called mouth rot, fin rot, or gill rot. Egg fungus is also a common pestilence on fish eggs and looks like a white cotton growth. Pimafix effectively treats fungal infections. To treat fungal infections with Pimafix, first remove any activated carbon or chemical filtration media, then add the manufacturer-recommended dose daily. The medication will help to kill any fungus present on the fish. Fungal infections often occur in dirty or poorly kept aquariums. If you have a fungus outbreak, it likely signals declining water quality, and your tank will likely benefit from extra cleaning.
Bacterial infection
For Bacterial Infections Use Melafix

Bacterial infections are common in both freshwater and saltwater aquariums. Many different types of bacterial infections go by a wide variety of names. Popeye is a bacterial infection of a fish’s eye in which the eye swells into a balloon-like bubble. Fin, mouth, and gill rot can also be bacterial and not just fungal. When bacterial, lesions tend to look redder and flatter, rather than the raised, white, cotton-like growth seen in fungal infections. Fish can also get bacterial infections if they have an open wound. Swelling and red discoloration can indicate an infection. Skin Ulcers are a bacterial infection of the fish’s body where the scales turn red and slough off.

Melafix is effective against bacterial infections. To treat with Melafix, remove carbon and turn off the protein skimmer if you have one. Add the recommended dose daily for at least 1 week, or until symptoms subside. If you have a saltwater aquarium, use Melafix Marine, which is designed for use in seawater.

You can also use Melafix as an antibacterial dip for corals. Make the dip by adding 30ml of Melafix to 1 gallon of tank water, then immerse the affected coral in the solution for 10-15 minutes. After the dip, dump out the leftover solution and return the coral to the aquarium.
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